import java.math.BigDecimal;
public class bigdecimal {
    public static void main(String[] args) {
        BigDecimal poperand1= new BigDecimal("1.0");
        BigDecimal poperand2= new BigDecimal("0.2");
        BigDecimal result= poperand1.subtract(poperand2);
        System.out.println(result);


    }
}

